Which factor is crucial when evaluating the success of infection control measures?

C is the correct choice because infection rates and outbreak monitoring are direct indicators of the effectiveness of infection control measures in a healthcare setting. By tracking these rates, healthcare professionals can assess how well infection prevention strategies are working, identify areas needing improvement, and respond timely to potential outbreaks. Monitoring these metrics is essential for maintaining a safe environment for patients, staff, and visitors.

While other factors like hospital room availability, patient satisfaction, and the variety of services offered play roles in overall healthcare delivery, they do not provide specific data regarding the effectiveness of infection control protocols. Infection rates give concrete evidence of change over time, allowing for informed decisions about the need for adjustment in practices or policies.